This Frontier Natural Products, Powdered Stevia comes in a Mylar bag which is probably much more environmental than a plastic bottle and less weight for transit; but the product suffers a little loss when we moved it to a more suitable container. The taste is okay, but no #1.

This is not the most natural stevia, since it is so refined, but it is, I think, the best tasting. Some people may disagree, but it tastes best in sour things - like lemon-vinegar-cranberry drinks or kefir with strawberries, chocolate, or vanilla flavoring.